Problem: I am using geany 1.35 and while I can use my mouse to close other windows, I am unable to map any keybinding to Close Other. There is no option from what I can tell, it is just not mapped.
Background: I have that keybinding exposed in other IDEs I use such as Intellij and so I am accustomed to using it to organize my workspace efficiently.
Proposed Solution: Expose Close Other as an action that can have a keybinding mapped, optionally default to CTRL+SHIFT+O.